Struct objc2::rc::Allocated

source · [−]

#[repr(transparent)]
pub struct Allocated<T: ?Sized>(_);

Expand description

A marker type that can be used within Id to indicate that the object has been allocated but not initialized.

The reason we use Option<Id<Allocated<T>, O>> instead of just *mut T is:

To allow releasing allocated objects, e.g. in the face of panics.
To safely know the object is valid (albeit uninitialized).
To allow specifying ownership.

Trait Implementations

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impl<T: Debug + ?Sized> Debug for Allocated<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<T: ?Sized> RefUnwindSafe for Allocated<T> where
T: RefUnwindSafe,

impl<T: ?Sized> Send for Allocated<T> where
T: Send,

impl<T: ?Sized> Sync for Allocated<T> where
T: Sync,

impl<T: ?Sized> Unpin for Allocated<T> where
T: Unpin,

impl<T: ?Sized> UnwindSafe for Allocated<T> where
T: UnwindSafe,

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct objc2::rc::Allocated

Trait Implementations

impl<T: Debug + ?Sized> Debug for Allocated<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations

impl<T: ?Sized> RefUnwindSafe for Allocated<T> where
T: RefUnwindSafe,

impl<T: ?Sized> Send for Allocated<T> where
T: Send,

impl<T: ?Sized> Sync for Allocated<T> where
T: Sync,

impl<T: ?Sized> Unpin for Allocated<T> where
T: Unpin,

impl<T: ?Sized> UnwindSafe for Allocated<T> where
T: UnwindSafe,

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct objc2::rc::Allocated

Trait Implementations

impl<T: Debug + ?Sized> Debug for Allocated<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations

impl<T: ?Sized> RefUnwindSafe for Allocated<T> where T: RefUnwindSafe,

impl<T: ?Sized> Send for Allocated<T> where T: Send,

impl<T: ?Sized> Sync for Allocated<T> where T: Sync,

impl<T: ?Sized> Unpin for Allocated<T> where T: Unpin,

impl<T: ?Sized> UnwindSafe for Allocated<T> where T: UnwindSafe,

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T: ?Sized> RefUnwindSafe for Allocated<T> where
T: RefUnwindSafe,

impl<T: ?Sized> Send for Allocated<T> where
T: Send,

impl<T: ?Sized> Sync for Allocated<T> where
T: Sync,

impl<T: ?Sized> Unpin for Allocated<T> where
T: Unpin,

impl<T: ?Sized> UnwindSafe for Allocated<T> where
T: UnwindSafe,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,